Why are my Knuckles purple?
Why are my Knuckles purple? Cyanosis occurs when there’s too little oxygen in the blood. Oxygen-rich blood is deep red and causes your skin’s normal color. Under-oxygenated blood is bluer and causes your skin to look bluish purple. Cyanosis can develop quickly due to an acute health problem or external factor.
Cyanosis occurs when there’s too little oxygen in the blood. Oxygen-rich blood is deep red and causes your skin’s normal color. Under-oxygenated blood is bluer and causes your skin to look bluish purple. Cyanosis can develop quickly due to an acute health problem or external factor.